<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>对props进行限制</title>
    </head>
    <body>
        <!-- 准备好一个“容器” -->
        <div id="test1"></div>
        <div id="test2"></div>
        <div id="test3"></div>

        <!-- 引入react核心库 -->
        <script type="text/javascript" src="../js/react.development.js"></script>
        <!-- 引入react-dom，用于支持react操作DOM -->
        <script type="text/javascript" src="../js/react-dom.development.js"></script>
        <!-- 引入babel，用于将jsx转为js -->
        <script type="text/javascript" src="../js/babel.min.js"></script>
        <!-- 引入prop-types，用于对组件标签属性进行限制 -->
        <script type="text/javascript" src="../js/prop-types.js"></script>

        <script type="text/babel">
            //创建组件
            class Person extends React.Component {
                render() {
                    //undefine
                    console.log(this.speak);
                    const {name, age, sex} = this.props
                    //props是只读的
                    //this.props.name = 'jack' //此行代码会报错，因为props是只读的
                    return (
                        <ul>
                            <li>姓名：{name}</li>
                            <li>性别：{sex}</li>
                            <li>年龄：{age + 1}</li>
                        </ul>
                    )
                }
            }

            //对标签属性进行类型、必要性的限制
            Person.propTypes = {
                name: PropTypes.string.isRequired, //限制name必传，且为字符串
                sex: PropTypes.string,//限制sex为字符串
                age: PropTypes.number,//限制age为数值
                speak: PropTypes.func,//限制speak为函数
            }
            //指定默认标签属性值
            Person.defaultProps = {
                sex: '男',//sex默认值为男
                age: 18 //age默认值为18
            }
            //渲染组件到页面
            ReactDOM.render(<Person name={100} speak={speak}/>, document.getElementById('test1'))
            ReactDOM.render(<Person name="tom" age={18} sex="女"/>, document.getElementById('test2'))

            const p = {name: '老刘', age: 18, sex: '女'}
            // console.log('@',...p);
            // ReactDOM.render(<Person name={p.name} age={p.age} sex={p.sex}/>,document.getElementById('test3'))
            ReactDOM.render(<Person {...p}/>, document.getElementById('test3'))

            function speak() {
                console.log('我说话了');
            }
        </script>
    </body>
</html>